/*
 * Copyright 2011 Peter Kuterna
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.peterkuterna.android.apps.devoxxfrsched.ui.widget;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.View;
import android.widget.TextView;

public class ExpandableTextView extends TextView {

	private int mMaxlines;
	private boolean mExpanded = false;
	private boolean mFirstDraw = false;
	private OnFirstDrawListener mOnFirstDrawListener = null;

	public ExpandableTextView(Context context) {
		super(context);
	}

	public ExpandableTextView(Context context, AttributeSet attrs) {
		super(context, attrs);
	}

	public ExpandableTextView(Context context, AttributeSet attrs, int defStyle) {
		super(context, attrs, defStyle);
	}

	@Override
	public void setMaxLines(int maxlines) {
		super.setMaxLines(maxlines);
		this.mMaxlines = maxlines;
	}

	public boolean isExpanded() {
		return mExpanded;
	}

	public void toggleExpand() {
		if (mMaxlines > 0) {
			mExpanded = !mExpanded;
			super.setMaxLines(mExpanded ? getLineCount() : mMaxlines);
		}
	}

	@Override
	public void draw(Canvas canvas) {
		super.draw(canvas);
		if (!mFirstDraw && mOnFirstDrawListener != null) {
			mOnFirstDrawListener.onFirstDraw(this);
			mFirstDraw = true;
		}
	}

	public void setOnFirstDrawListener(OnFirstDrawListener onFirstDrawListener) {
		this.mOnFirstDrawListener = onFirstDrawListener;
	}

	public interface OnFirstDrawListener {

		void onFirstDraw(View v);

	}

}
